Question 1

Which of the following hypotheses is testable using scientific methods?

Accepted Answer

A)  Bees can see ultraviolet light that humans can't. 
B)  The dinosaur Tyrannosaurus rex was a scavenger, not a predator. 
C)  Peacocks like to display their large tail feathers. 
D)  People with type O blood are natural meat eaters. 
A)  Bees can see ultraviolet light that humans can't. 
B)  The dinosaur Tyrannosaurus rex was a scavenger, not a predator. 
C)  Peacocks like to display their large tail feathers. 
D)  People with type O blood are natural meat eaters.

Question 2

Why is the random assignment of individuals to experimental and control groups important for an experiment?

Accepted Answer

A)  It ensures that bias has been completely eliminated from the experiment. 
B)  It ensures that the results of the experiment will be statistically significant. 
C)  It ensures that the sampling error will have no effect on the results of the experiment. 
D)  It ensures that each group will better represent the population as a whole. 
A)  It ensures that bias has been completely eliminated from the experiment. 
B)  It ensures that the results of the experiment will be statistically significant. 
C)  It ensures that the sampling error will have no effect on the results of the experiment. 
D)  It ensures that each group will better represent the population as a whole.

Question 3

A personal opinion on the effectiveness of a dietary supplement in preventing colds is an example of ________ evidence.

Accepted Answer

The answer of A personal opinion on the effectiveness of...

Question 4

A ________ is a factor in an experiment that can be manipulated.

Accepted Answer

A)  bias 
B)  control 
C)  placebo 
D)  variable 
A)  bias 
B)  control 
C)  placebo 
D)  variable

Question 5

The specialized branch of mathematics that is used to compare data is called

Accepted Answer

A)  epidemiology. 
B)  computational mathematics. 
C)  cross-sectional mathematics. 
D)  statistics. 
A)  epidemiology. 
B)  computational mathematics. 
C)  cross-sectional mathematics. 
D)  statistics.

Question 6

The most trustworthy source of scientific information is

Accepted Answer

A)  anecdotal evidence. 
B)  paid advertisements. 
C)  peer-reviewed research publications. 
D)  science reports in newspapers and on TV. 
A)  anecdotal evidence. 
B)  paid advertisements. 
C)  peer-reviewed research publications. 
D)  science reports in newspapers and on TV.

Question 7

A news report on CNN that describes recently published research on a new treatment for colds is an example of a(n)

Accepted Answer

A)  anecdote. 
B)  primary source. 
C)  secondary source. 
D)  peer-reviewed report. 
A)  anecdote. 
B)  primary source. 
C)  secondary source. 
D)  peer-reviewed report.

Question 8

Why are hypotheses never accepted by scientists?

Accepted Answer

A)  A hypothesis cannot ever be true or false because it is an opinion. 
B)  Experimentation cannot support a hypothesis because it only tests predictions. 
C)  Hypotheses change every time a new experiment is conducted. 
D)  Alternative hypotheses might provide a better answer to the research question. 
A)  A hypothesis cannot ever be true or false because it is an opinion. 
B)  Experimentation cannot support a hypothesis because it only tests predictions. 
C)  Hypotheses change every time a new experiment is conducted. 
D)  Alternative hypotheses might provide a better answer to the research question.

Question 9

The incidence of cancer in people living within 100 yards of overhead power lines is recorded. This would be best described as an example of a(n)

Accepted Answer

A)  ecological study. 
B)  cross-sectional survey. 
C)  cohort study. 
D)  correlational experiment. 
A)  ecological study. 
B)  cross-sectional survey. 
C)  cohort study. 
D)  correlational experiment.

Question 10

A researcher has hypothesized that the chemical tributyltin (an additive in boat paint)seeps out of the paint into the water and causes reproductive defects in developing marine snails. Which of the following would be a good control in an experiment that tests the effects of tributyltin on developing snails?

Accepted Answer

A)  Developing snails are kept in a tank of water and exposed to below-expected levels of tributyltin. 
B)  Developing snails are kept in a tank of water and exposed to boat paint that does not contain tributyltin. 
C)  Developing snails are kept in a dry tank to avoid exposure to contaminated water. 
D)  Developing snails are kept in a tank of water that has never been exposed to boat paint. 
A)  Developing snails are kept in a tank of water and exposed to below-expected levels of tributyltin. 
B)  Developing snails are kept in a tank of water and exposed to boat paint that does not contain tributyltin. 
C)  Developing snails are kept in a dry tank to avoid exposure to contaminated water. 
D)  Developing snails are kept in a tank of water that has never been exposed to boat paint.

Question 11

What hypothesis was tested by Warren and Marshall during their research involving Helicobacter pylori bacteria and stomach ulcers?

Accepted Answer

A)  Eating spicy food increases populations of H. pylori in the stomachs of people susceptible to ulcers. 
B)  The cause of many stomach ulcers is the bacterium H. pylori, not spicy food. 
C)  Stomach acid production is decreased by H. pylori bacteria in the stomachs of people who have ulcers. 
D)  Acute stomach pain is often caused by H. pylori bacteria, not ulcers. 
A)  Eating spicy food increases populations of H. pylori in the stomachs of people susceptible to ulcers. 
B)  The cause of many stomach ulcers is the bacterium H. pylori, not spicy food. 
C)  Stomach acid production is decreased by H. pylori bacteria in the stomachs of people who have ulcers. 
D)  Acute stomach pain is often caused by H. pylori bacteria, not ulcers.

Question 12

If the reported confidence interval for a population mean is 95%, then there is a

Accepted Answer

A)  5% chance that the results are statistically significant. 
B)  95% chance that the results are statistically significant. 
C)  5% probability that the true mean is in the reported range. 
D)  95% probability that the true mean is in the reported range. 
A)  5% chance that the results are statistically significant. 
B)  95% chance that the results are statistically significant. 
C)  5% probability that the true mean is in the reported range. 
D)  95% probability that the true mean is in the reported range.

Question 13

A(n)________ subject is treated as closely as possible to an experimental subject except that he or she does not get the experimental treatment.

Accepted Answer

The answer of A(n)________ subject is treated as closely as...

Question 14

Statistical analysis of experimental results determines

Accepted Answer

A)  the amount of bias in the experimental design. 
B)  the likelihood that the results are due to the experimental treatment. 
C)  whether the experiment proves that the hypothesis being tested is correct. 
D)  whether the proper controls were used in the experiment. 
A)  the amount of bias in the experimental design. 
B)  the likelihood that the results are due to the experimental treatment. 
C)  whether the experiment proves that the hypothesis being tested is correct. 
D)  whether the proper controls were used in the experiment.

Which of the following hypotheses is testable using scientific methods?

Why is the random assignment of individuals to experimental and control groups important for an experiment?

A personal opinion on the effectiveness of a dietary supplement in preventing colds is an example of ________ evidence.

A ________ is a factor in an experiment that can be manipulated.

The specialized branch of mathematics that is used to compare data is called

The most trustworthy source of scientific information is

A news report on CNN that describes recently published research on a new treatment for colds is an example of a(n)

Why are hypotheses never accepted by scientists?

The incidence of cancer in people living within 100 yards of overhead power lines is recorded. This would be best described as an example of a(n)

What hypothesis was tested by Warren and Marshall during their research involving Helicobacter pylori bacteria and stomach ulcers?

If the reported confidence interval for a population mean is 95%, then there is a

A(n)________ subject is treated as closely as possible to an experimental subject except that he or she does not get the experimental treatment.

Statistical analysis of experimental results determines

Are We Alone in the Universe? Water, Biochemistry, and Cells

Is It Possible to Supplement Your Way to Better Health?

Fat: How Much is Right for You? Enzymes, Metabolism, and Cellular Respiration

Life in the Greenhouse: Photosynthesis and Global Warming

Cancer: DNA Synthesis, Mitosis, and Meiosis

Are You Only as Smart as Your Genes? Mendelian and Quantitative Genetics

DNA Detective: Complex Patterns of Inheritance and DNA Fingerprinting

Genetically Modified Organisms: Gene Expression, Mutation, and Cloning

Where Did We Come From? The Evidence for Evolution

An Evolving Enemy: Natural Selection

Who Am I? Species and Races

Prospecting for Biological Gold: Biodiversity and Classification

Is the Human Population Too Large? Population Ecology

Conserving Biodiversity: Community and Ecosystem Ecology

Where Do You Live? Climate and Biomes

Organ Donation: Tissues Organs and Organ Systems

Clearing the Air: Respiratory Cardiovascular and Excretory Systems

Vaccinations: Protection and Prevention or Peril? Immune System

Sex Differences and Athleticism: Endocrine Skeletal and Muscular Systems

Is There Something in the Water? Reproductive and Developmental Biology

Attention Deficit Disorder: Brain Structure and Function

Feeding the World: Plant Structure and Growth

Growing a Green Thumb: Plant Physiology

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Exam 1: Can Science Cure the Common Cold? Introduction to the Scientific Method

Which of the following hypotheses is testable using scientific methods?

Why is the random assignment of individuals to experimental and control groups important for an experiment?

A personal opinion on the effectiveness of a dietary supplement in preventing colds is an example of ________ evidence.

A ________ is a factor in an experiment that can be manipulated.

The specialized branch of mathematics that is used to compare data is called

The most trustworthy source of scientific information is

A news report on CNN that describes recently published research on a new treatment for colds is an example of a(n)

Why are hypotheses never accepted by scientists?

The incidence of cancer in people living within 100 yards of overhead power lines is recorded. This would be best described as an example of a(n)

What hypothesis was tested by Warren and Marshall during their research involving Helicobacter pylori bacteria and stomach ulcers?

If the reported confidence interval for a population mean is 95%, then there is a

A(n)________ subject is treated as closely as possible to an experimental subject except that he or she does not get the experimental treatment.

Statistical analysis of experimental results determines

Are We Alone in the Universe? Water, Biochemistry, and Cells

Is It Possible to Supplement Your Way to Better Health?

Fat: How Much is Right for You? Enzymes, Metabolism, and Cellular Respiration

Life in the Greenhouse: Photosynthesis and Global Warming

Cancer: DNA Synthesis, Mitosis, and Meiosis

Are You Only as Smart as Your Genes? Mendelian and Quantitative Genetics

DNA Detective: Complex Patterns of Inheritance and DNA Fingerprinting

Genetically Modified Organisms: Gene Expression, Mutation, and Cloning

Where Did We Come From? The Evidence for Evolution

An Evolving Enemy: Natural Selection

Who Am I? Species and Races

Prospecting for Biological Gold: Biodiversity and Classification

Is the Human Population Too Large? Population Ecology

Conserving Biodiversity: Community and Ecosystem Ecology

Where Do You Live? Climate and Biomes

Organ Donation: Tissues Organs and Organ Systems

Clearing the Air: Respiratory Cardiovascular and Excretory Systems

Vaccinations: Protection and Prevention or Peril? Immune System

Sex Differences and Athleticism: Endocrine Skeletal and Muscular Systems

Is There Something in the Water? Reproductive and Developmental Biology

Attention Deficit Disorder: Brain Structure and Function

Feeding the World: Plant Structure and Growth

Growing a Green Thumb: Plant Physiology

Filters